title: Enhanced membrane filtration of wood hydrolysates for hemicelluloses recovery by pretreatment with polymeric adsorbents.
abstract: In this study adsorption of foulants from birch and pine/eucalyptus wood hydrolysates on two polymeric adsorbents was studied aiming to reduce the membrane fouling. The effect of the pretreatment of hydrolysate on polyethersulphone membrane performance was studied in dead-end filtration experiments. Adsorption pretreatment improved significantly filtration capacity and decreased membrane fouling. Especially high-molecular weight lignin was efficiently removed. A multistep adsorption pretreatment was found to reduce the amount of adsorbent required. While large adsorbent amount was shown to increase flux in filtration, it was found also to cause significant hemicellulose losses.
authors.affiliation: Lappeenranta University of Technology, Laboratory of Separation Technology, Skinnarilankatu 34, FI-53850 Lappeenranta, Finland.
authors.forename: Elsi
authors.initials: E
authors.lastname: Koivula
authors.forename: Mari
authors.initials: M
authors.lastname: Kallioinen
authors.forename: Tuomo
authors.initials: T
authors.lastname: Sainio
authors.forename: Enrique
authors.initials: E
authors.lastname: Antón
authors.forename: Susana
authors.initials: S
authors.lastname: Luque
authors.forename: Mika
authors.initials: M
authors.lastname: Mänttäri
mesh_terms: D000327:Adsorption; D005374:Filtration / Q000379:methods*; D006868:Hydrolysis; D008567:Membranes, Artificial; D011108:Polymers / Q000737:chemistry*; D011134:Polysaccharides / Q000737:chemistry*; D014934:Wood
chemical_list: D008567:Membranes, Artificial; D011108:Polymers; D011134:Polysaccharides; C007916:hemicellulose
keywords: Adsorption; Birch; Eucalyptus; Pine; Ultrafiltration